CMDZ5228B TR

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Introduction

The CMDZ5228B TR from ON Semiconductor is a single Zener diode with a nomidentical voltage of 5.1V and a power dissipation of 250mW. The CMDZ5228B TR has a typical Zener impedance at IZT of 12Ω. Its package contains two terminals and is available in a DO-35 form factor. This diode was designed to meet the requirements of general purpose and low voltage applications.

Application Field

The CMDZ5228B TR is well-suited for multiple applications, such as providing protection against electrical transients, static electricity, excessive bias levels and fault conditions in power supply and audio/video equipment. It can also be used in portable devices and other comparable circuits as a voltage reference element.

Working Principle

The CMDZ5228B TR is a single Zener diode with a breakdown voltage rating of 5.1V and a maximum power dissipation rating of 250mW. A Zener diode is an electronic device which is designed to conduct in either direction once the voltage across its terminals reaches a certain breakdown voltage. This breakdown voltage is set by using the doping process of the semiconductor material used. This breakdown voltage can range from a few volts to hundreds of volts. When in the Zener mode, the diode behaves like a resistor and is known to have a relatively low junction capacitance.

The diagram below illustrates the operating principle of the CMDZ5228B TR.

In the diagram above, when the anode voltage is above the breakdown voltage of 5.1V, the diode is in a non-conducting state and behaves like an open circuit. In the reverse direction however, when the voltage reaches the breakdown voltage, a small current will flow through the diode, allowing it to have a decrease in voltage.

The CMDZ5228B TR’s operating temperature range is from -40°C to 125°C. The maximum power rating of 250mW is important when selecting a Zener diode for a particular application. If the maximum power rating is exceeded, the device will fail.

Conclusion

The CMDZ5228B TR is a single Zener diode with a nomidentical voltage of 5.1V and a power dissipation of 250mW. It is an ideal choice for general purpose and low voltage applications, such as providing protection against electrical transients, static electricity, excessive bias levels and fault conditions in power supply and audio/video equipment. It is important to understand the working principle and the maximum power dissipation rating of the CMDZ5228B TR when selecting it for a particular application.

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